Adds disk space commands to linux.

linux.md

@@ -11,3 +11,19 @@ title: Linux
     sudo visudo
 
     username ALL=(ALL) NOPASSWD:/sbin/restart whatever
+
+### Display the amount of available disk space
+
+    $ df
+
+All File System:
+
+    $ df -a
+
+Human Readable Format:
+
+    $ df -h
+
+Largest 10 folder/file in the current directory:
+
+    $ du -hsx * | sort -rh | head -10